import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'

Vue.use(VueRouter)

const routes = [
  // 重定向
  {
    path: '/',
    redirect: 'login'
  },
  {
    path: '/login',
    component: Login
  },
  {
    path: '/home',
    component: () => import('../components/Home.vue'),
    redirect: '/welcome',
    children: [{
      path: '/welcome',
      component: () => import('../components/Welcome.vue'),
    }, {
      path: '/users',
      component: () => import('../components/user/Users.vue'),
    }, {
      path: '/rights',
      component: () => import('../components/power/Rights.vue'),
    }, {
      path: '/roles',
      component: () => import('../components/power/Roles.vue'),
    }, {
      path: '/categories',
      component: () => import('../components/goods/Cate.vue'),
    }, {
      path: '/params',
      component: () => import('../components/goods/Params.vue'),
    }, {
      path: '/goods',
      component: () => import('../components/goods/List.vue'),
    }, {
      path: '/goods/add',
      component: () => import('../components/goods/Add.vue'),
    }, {
      path: '/orders',
      component: () => import('../components/order/Order.vue'),
    }, {
      path: '/reports',
      component: () => import('../components/report/Report.vue'),
    }, ]
  },

]

const router = new VueRouter({
  mode: 'history',
  base: process.env.BASE_URL,
  routes
})

// 挂载路由守卫
router.beforeEach((to, from, next) => {
  // to 将要访问的路径
  // from 代表从哪个路径跳转而来
  // next 是一个函数，表示放行
  // next() 放行   next('/login')  强制跳转
  if (to.path === '/login') return next()
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) {
    return next('/login')
  } else {
    next()
  }
})


export default router